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Service bulletin 030402

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id636477
Published by NHTSA2002-11-08
Manufacturer's number030402
Manufacturer's date2002-04-03
NHTSA componentEXTERIOR LIGHTING

NHTSA's summary

INFORMATION ON THE ELIMINATION OF THE SUNSHADE DIMMER SWITCH. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Lighting

Vehicles listed
CADILLAC CADILLAC
CHEVROLET CHEVROLET
GMC GMC

Listing a model year does not mean every vehicle of it is concerned: the document says which.